[Formula Omitted] Pixel Charge-Transfer-Type Hydrogen Ion Image Sensor

The charge transfer technique, which can operate in the charge accumulation mode, is suitable for pH imaging to detect small changes in potential. An advanced charge-transfer-type hydrogen image sensor consisting of [Formula Omitted] pixels was fabricated. The new pixel design and scanning system achieve a high-density image element with a pixel area of [Formula Omitted], which is 73% less than that in our previous work. The pH sensitivity is 29.8 mV/pH when using standard pH solutions. All [Formula Omitted] pixels are capable of measuring hydrogen ions, as demonstrated in a video of hydrogen ion movement on the new sensor chip.